| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technology capable of improving the power transmission efficiency and minimizing the quantity of the magnetic field to be leaked to the outside. <P>SOLUTION: A shielding apparatus included in a wireless power transmission apparatus for wirelessly transmitting power to a wireless power reception apparatus includes a first shielding unit changing a transmission path of a portion of the magnetic field generated by a transmission coil 22 of the wireless power transmission apparatus, and a second shielding unit located on the top surface of the first shielding unit and shielding a portion of the magnetic field which has passed through the first shielding unit. The real part of the permeability of the first shielding unit is greater than the imaginary part thereof, and the imaginary part of the permeability of the second shielding unit is greater than the real part thereof. <P>COPYRIGHT: (C)2013,JPO&INPIT |
